JP2006096420A - Liquid or paste-like matter dispensing inner nozzle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means protecting an entire content in a tank against contact with surrounding atmosphere, avoiding change of a substance or contamination with germs, and further easily attached to the tank. <P>SOLUTION: The nozzle has a socket (1), a movable closing unit (2) and an elastic restoration means (3). The movable closing unit (2) has a rod (21) and an inflow valve comprised of an elastically deformable peripheral lip (23). The outer end of the rod (21) together with an ejection orifice (10) constitutes a discharge valve, and the inner end of the rod (21) supports a crossing wall (22) cooperating with the elastic restoration means (3) of the movable closing unit (2). The inflow valve is arranged within a flow passage (P) for the substance. The inner space of the socket (1) is air-tightly divided into an upstream chamber and a downstream chamber. The lip (23) is connected with the rod (21), and a free end of the lip is set in close contact with the inner wall of the socket (1) at a valve closing position. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

   The present invention relates to a dispensing plug for liquid or pasty substances.

  There is already a dispensing tap that can be pressurized to attach to the tank.

  Generally, the discharge valve is positioned inside a pump mechanism that ensures the discharge of material.

  This pump is activated by a push button that forms an inner plug / diffuser.

  However, since the dispensing plug is mounted downstream of the discharge valve, a certain amount of material between the valve and the injection hole of the plug remains exposed to the air.

  In certain fields of application, in particular pharmaceuticals and cosmetics, this amount of unprotected material can be contaminated with bacteria or dry out and block the ejection duct.

  In such a state, the substance left in the tank cannot be used.

  In order to eliminate such drawbacks, CH-A-178923 has a tank connection tip on one side, a sleeve provided with a jet hole, a stopper that forms a discharge valve with the jet hole on the outer end, Said socket comprising a rod for supporting a transverse wall cooperating with an elastic return means of a movable occluder towards a closed position with a flow passage for the substance at the end and in which the stopper is fitted tightly with the spout An internal stopper composed of a movable occluder stored in the interior is proposed.

CH-A-178923

  However, since the occluder is a manual operation, the differential pressure for opening and closing the discharge valve is low (about 0.1 bar).

  As a result, the airtightness after the occluder is loosened and the discharge valve is closed is not sufficiently high, so that the intake of air cannot be completely prevented.

  In such a situation, there remains a risk of contamination of the material.

  The present invention aims to solve this technical problem in a sufficient manner by improving the tightness of the dispensing tap for use with sterile materials.

  The purpose of the present invention is to provide an internal stopper that can be pressurized and attached to a tank, according to the present invention, a tank connection tip, a socket with a jet hole, and a discharge valve with a jet hole at the outer end. And a transverse wall cooperating with the elastic return means of the movable occluder towards the closed position, with a flow path for the substance at the inner end and with the plug in an airtight engagement with the outlet hole An inflow valve comprising a deformable peripheral lip comprising a rod, and a movable occluder housed in the socket, wherein the flow path of the material around the rod is hermetically divided into an upstream chamber and a downstream chamber This is achieved by an internal plug of the type characterized by comprising:

  According to an advantageous embodiment, the lip is connected to a rod, the free end of the lip being in close contact with the inner wall of the socket in the closed position of the valve.

  According to a particular embodiment, the lip is carried by a crown coaxial with the rod.

  Preferably, the transverse wall is realized with only one piece with the crown.

  According to another embodiment, the upstream end of the lip is connected to the rod.

  According to a further embodiment, the transverse wall is elastically deformable and is held by its periphery at the connection end of the socket, forming an elastic return means for the occluder.

  According to an advantageous feature, the rod forms an axial shoulder with the transverse wall in the axial direction.

  According to a variant embodiment, the elastic return means comprises a chord spring that surrounds the rod of the occluder with the rear end abutting the shoulder and the front end abutting the inner wall of the socket.

  According to a particular feature of this variant, the front end of the spring bears against a longitudinal rib extending along the inner wall of the socket.

  According to another feature of this variant, the front end of the spring rests in the bottom of the annular groove, which is arranged on the inner wall of the socket and whose inner edge is limited by the rod guide collar.

  According to another embodiment, the plug first comprises a main body whose side faces are in close contact with the inner edge of the ejection hole in the closed position, and further a head that projects out of the socket.

  According to a particular variant, the ejection holes have a frustoconical shape corresponding to the shape of the plug body. Otherwise, the inner edge of the ejection hole is provided with an annular ring on which the side surface of the plug body comes into close contact when the plug is closed.

  According to yet another embodiment, the socket has a warhead shape and the plug head has a curved shape whose curvature is determined to ensure continuity of the warhead appearance.

  According to yet another feature, the connecting end of the socket has a rib on the inner wall that forms a stop for the transverse wall.

  According to yet another feature, the rod is connected to a transverse wall and fits within a clamping sleeve carrying the wall.

  Preferably, the dispensing inner plug further comprises a removable cap for covering the socket, the top of which abuts the stopper by its inner surface to ensure hermetic closure.

  Further, the transverse wall may be extended toward the tank by a claw fitted in a sleeve protruding inside the tank.

  That is, the means for solving the problems of the present invention are as follows.

First,
In an inner plug for dispensing a liquid or pasty substance (P) for attachment to a tank (R) that can be pressurized,
A socket (1) having a connection tip (11) to the tank (R) and an ejection hole (10);
A movable occluder (2) stored inside the socket (1) to form a flow path for the substance (P);
Elastic return means (3) of the movable occluder (2),
Furthermore, a dispensing inner plug having the following characteristics.
The movable occluder (2) has a rod (21) and an inflow valve composed of an elastically deformable peripheral lip (23).
The outer end of the rod (21) constitutes a plug (20) that forms a discharge valve together with the ejection hole (10), and the inner end of the rod (21) is an elastic return means (3) of the movable occluder (2) ) To support the transverse wall (22).
The inflow valve is arranged in the flow path for the substance (P) and hermetically divides the internal space of the socket (1) into an upstream chamber and a downstream chamber.
The lip (23) is connected to the rod (21) and the free end of the lip is in close contact with the inner wall of the socket (1) in the closed position of the valve;
Second,
In the inner plug of the first aspect, the lip (23) forms a coaxial crown connected to the rod (21), the free end of the lip being on the inner wall of the socket (1) in the closed position of the valve. Dispensing inner stopper characterized by being closely attached.
Third,
3. A dispensing inner plug according to claim 2, wherein the transverse wall (22) is realized by the crown and only one part.
Fourth,
The inner plug according to any one of the first to third aspects, wherein the upstream end of the movable switch (2) is connected to the rod (21).
Fifth,
In an inner plug for dispensing a liquid or pasty substance (P) for attachment to a tank (R) that can be pressurized,
A socket (1) having a connection tip (11) to the tank (R) and an ejection hole (10);
Inside the socket (1) has a movable occluder (2) stored so as to form a flow path for the substance (P),
Furthermore, a dispensing inner plug having the following characteristics.
The movable occluder (2) includes a rod (21).
The outer end of the rod (21) of the movable occluder (2) carries a plug (20) that forms a discharge valve together with the ejection hole (10).
-The inner end of the rod (21) of the movable occluder (2) is provided with a transverse wall (22).
The movable occluder (2) is provided with an inflow valve consisting of an elastically deformable peripheral lip (23).
The inflow valve of the movable occluder (2) is arranged in the flow path for the substance (P), and divides the internal space of the socket (1) in an airtight manner into an upstream chamber and a downstream chamber.
The transverse wall (22) is elastically deformable and is held by the connection end (11) of the socket (1), thereby forming the elastic return means of the occluder (2).
-The transverse wall (22) is perforated so as to arrange the flow path for the passage of the substance (P).
Sixth,
In the inner plug according to the first aspect, the rod (21) forms a peripheral shoulder (22a) at the transverse wall (22).
Seventh,
In the inner plug according to the sixth aspect, the elastic return means (3) is configured such that the rear end is in contact with the shoulder (22a) and the front end is in contact with the inner wall of the socket (1). A distribution inner plug characterized by being a string spring that surrounds).
Eighth,
The inner plug according to the seventh aspect, wherein the front end of the spring (3) is in contact with a longitudinal rib (12) extending along the inner wall of the socket (1).
Ninth,
An annular groove (7), wherein the front end of the spring (3) is arranged on the inner wall of the socket (1) and the inner edge is limited by the guide collar (14) of the rod (21). 13) A dispensing inner cap that contacts the bottom of 13).
Tenth,
The inner plug according to any one of the first to ninth aspects, wherein the plug (20) has a main body (20a) that is in close contact with the inner edge (10a) of the ejection hole (10) when the side surface is in a closed position; A dispensing inner plug comprising a head (20b) protruding outside the socket (1).
Eleventh,
10. The inner stopper according to the tenth aspect, wherein the ejection hole (10) has a truncated cone shape corresponding to the shape of the main body (20a) of the stopper (20).
12th,
In the inner plug according to the tenth or eleventh aspect, the socket (1) has a warhead shape, and the head (20b) of the plug (20) has a curvature that ensures continuity of the warhead-shaped appearance. A dispensing plug characterized by having a curved shape determined by
13th
13. The inner plug according to any one of the first to twelfth aspects, wherein the top for contacting the socket (1) is in contact with the plug (20) by the inner wall to ensure the airtightness of the closure. Dispensing inner plug characterized by having a free cap (4).
14th,
The inner plug according to any one of the first to thirteenth aspects, wherein the transverse wall (22) is fitted by a claw (25) fitted in a sleeve (5) protruding into the tank, Dispensing inner plug characterized by extending toward the tank (R).

  The internal plug according to the present invention has a combination of two valves that allows airtight control, thus protecting the entire contents of the tank from any contact with the outside air and eliminating the risk of material alteration or bacterial infection. Is done. The inner plug can be easily mounted on the tank, either directly or indirectly via a joint, from the inside or from the outside.

  The material in the chamber upstream of the inner plug is effectively protected in the same way as when in the tank.

  Two valves mounted on the same part operate in the same direction, but in a direction of movement along separate axes.

  When the pressure is generated in the substance and in the tank and exceeds the threshold value, the occluder moves and the substance is ejected. Below this threshold, the occluder is in the closed position on the inner plug by actuation of the return means.

  In addition, the structure of the dispensing plug prevents the material from accidentally coming out or leaking. A cap over the socket and abutting the plug of the occluder keeps the plug in a closed position in close contact with the valve seat. This arrangement ensures the tightness of the dispensing cap even when pressure is unexpectedly generated on the substance in the tank.

1 is a longitudinal sectional view of a first embodiment of an inner plug according to the invention in a closed position and mounted on a tank; FIG. FIG. 2 is a longitudinal cross-sectional view of the inner plug of FIG. 1 in an open position. FIG. 4 is a cross-sectional view of a cap that is placed on the outer surface of the socket in a closed position. It is sectional drawing of the 2nd embodiment of an inner stopper. FIG. 6 is a cross-sectional view showing a third embodiment of the inner plug according to the present invention in a closed position. FIG. 6 is a cross-sectional view showing a third embodiment of the inner plug according to the present invention in an open position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Socket 2 Movable obturator 3 Elastic return means 10 Ejection hole 11 Connection tip 20 Plug 21 Rod 22 Transverse wall 23 Peripheral lip

  The present invention will become apparent upon reading the following description with reference to the accompanying drawings.

  The inner plug E shown in FIG. 1 is formed of a soft bag filled with a liquid or paste-like substance P and is attached to a tank R that is airtightly fixed to the joint D.

  The bag R can be pressurized by hand or by a pallet T slidably attached to a support M integral with the joint D. In this way, the bag R is maintained inside the hard structure.

  According to the invention, the dispensing plug E has on the one hand a socket 1 with a connection end 11 to the joint D of the bag R via the ring B and on the other hand a jet hole 10.

  The inner plug E further includes a movable occluder 2 that is stored in the socket 1 with a flow path for the substance P from the joint D to the ejection hole 10.

  The occluder 2 comprises a rod 21 carrying a stopper 20 that forms a discharge valve together with the ejection hole 10 at the outer end thereof.

  The inner end of the rod 21 is provided with a rigid transverse wall 22 that cooperates with the return means of the occluder. The wall 22 is realized by the rod 21 and only one part, or as shown in FIGS. 1 and 2, a clamping sleeve 24 formed as a separate part into which the inner end of the rod 21 is engaged. And is connected to the rod 21.

  In the embodiment shown, the rod 21 is axially formed with a wall 22 and a peripheral shoulder 22a extending radially in the direction of the inner wall of the socket 1 by means of a peripherally deformable peripheral lip 23 forming an inflow valve. Lip 23 is realized with only one piece with wall 22 and sleeve 24 to form a crown. In the closed position of the valve, the lip 23 thus communicates with the outside by means of a hole 10 and an upstream chamber located on the distal end side 11 of the socket 1 that can communicate the flow path for the substance with the tank R. Air-tight division into a downstream chamber that can.

  In this way, the lip 23 forms a coaxial crown connected to the rod 21 by the upstream end, while the free end on the downstream side is in close contact with the inner wall of the socket 1 in the closed position shown in FIG.

  Here, the occluder 2 is provided with return means formed of a spring.

  The return spring 3 coaxially surrounds the rod 21 and the rear end spiral contacts the shoulder 22a, thereby returning the movable occluder 2 to the closed position. The front end spiral of the spring 3 abuts on a longitudinal rib 12 that extends on the inner wall of the socket 1 in the vicinity of the hole 10 by a length determined according to the characteristic value of the spring.

  The stopper 20 is constituted by a main body 20a, and the latter side surface is in close contact with the inner edge 10a of the ejection hole 10 in the closed position, thereby forming the valve seat of the discharge valve.

  In this way, an airtight contact is realized between the two conical surfaces. In another embodiment (not shown), an annular ring realized on the inner edge 10a of the ejection hole 10 can be provided. At this time, the contact is ensured between the side surface of the main body 20a of the plug 20 and the ring, and is thus reduced to a circular line to enhance the airtight contact. The main body 20a extends outside the socket 1 by a head 20b protruding forward.

  Preferably, the ejection hole 10 has a truncated cone shape corresponding to the shape of the main body 20a of the stopper 20.

  The socket 1 has a warhead shape, and the head 20b of the plug 20 has a curved shape whose curvature is determined to ensure continuity of the warhead-shaped appearance.

  When the pressure of the substance P acts on the side surface of the main body 20a of the plug 20, the occluder 2 moves forward from the rear closed position where the plug 20 is fitted into the ejection hole 10 and is held airtight therein.

  This movement only occurs when the applied pressure exceeds a limit value determined by the tare weight of the string spring 3 that is compressed by the action of the thrust. At this time, the substance P elastically deforms the lip 23, bypasses the wall 22 in the lateral direction, and enters the downstream chamber. Then, inside the downstream chamber, the substance P traverses the spiral of the spring 3 and is directed to the ejection hole 10 in the space between the inner wall of the socket 1 and the sleeve 24 and / or the rod 21 of the occluder 2, The main body 20a of the plug 20 is pushed, detoured and then discharged outside.

  The ejection mechanism can be adjusted, for example, by configuring it so that the spring 3 is still slightly compressed in the closed position of the occluder to enhance hermeticity.

  In this case, when the side surface of the main body 20a of the plug 20 is forcibly brought into contact with the inner edge 10a of the ejection hole 10, the occluder is held in the closed position toward the front.

  According to the variant, the connection tip 11 or joint D of the socket 1 can be provided with a rib 11a on its inner wall that forms a rear stop for the wall 22 when the occluder returns to the closed position. .

  In the illustrated variant, the rib 11a is formed by the edge of the joint D.

  In FIG. 3, the dispensing inner plug is provided with a removable cap 4 for covering the socket 1.

  The top of the cap 4 is provided with a recessed portion 40 with a thin wall, and its inner surface abuts against the head 20b of the plug 20 to ensure the tightness of the closure.

  The cap 4 is, for example, screwed on the outside, on the connection tip 11 of the socket 1 or on the outer ring, or directly on the wall of the rigid tank R as shown in FIG.

  For this purpose, the wall of the tank R is provided with ribs N which are arranged on the inner wall of the cap 4 and form threads which cooperate with the corresponding ribs 41 in order to ensure tightening.

The positions and shapes of the ribs 41 and N are determined so that the indented portion 40 contacts the stopper 20 at the end of tightening.
Optionally, the cap includes an internal stiffening element 42 (see FIGS. 5a and 5b) that abuts the top of the container R.

In the embodiment of FIG. 4, the wall 22 carrying the peripheral lip 23 of the inflow valve extends toward the tank R by a claw 25, the claw fits into the sleeve 5, and the sleeve itself is also stored in the joint D. , Projecting into the tank R.
If necessary, the sleeve 5 is connected to the connecting tip 11 of the socket 1 or the inner wall of the joint D (see FIGS. 5a and 5b). Here, the connecting tip 11 is screwed onto the joint D and includes a peripheral collar 11a.

  The sleeve 5 includes a shoulder 50 that is disposed directly against the rear surface 24 of the wall 22.

  In this embodiment, the front end of the spring 3 abuts the bottom of an annular groove 13 disposed on the top inner wall of the socket 1. The groove 13 is defined at its inner edge by a collar 14 that ensures the guiding of the rod 21 when the rod moves axially. The free inner edge 14 a of the collar 14 thereby serves as a stop for the sleeve 24 when the sleeve moves axially with the rod 21. If the lip 23 is long (as in the embodiment of FIGS. 5a, 5b), the free end of the lip can fit at least partially into the groove 13 when the occluder 2 is in the open position.

  When the pressure in the tank R increases, the substance P reaches the upstream chamber of the socket 1 through an annular free space defined on the one hand by the sleeve 5 and on the other hand by the claws 25.

  Although this space is narrow, it is suitable for the viscosity of the substance P, so that the flow rate from the tank R toward the internal space of the socket 1 can be suppressed.

  Next, the substance deforms the lip 23 and enters the chamber downstream of the socket 1.

  Next, a thrust is applied to the plug 20 to move out of the hole 10 in the axial direction. This movement compresses the spring 3, thereby forming a passage for the substance P between the rod 21 and the collar 14 towards the outside.

  In the embodiment shown in FIGS. 5 a and 5 b, the transverse wall 22 is elastically deformable and is held at the connection tip 11 of the socket 1, thereby forming the elastic return means of the occluder 2. The wall 22 and the lip 23 are connected by a central fastening ring 26 fastened on the narrow portion 21a of the rod 21.

The wall 22 is perforated to place a flow path for the passage of the substance P between the tank R and the upstream chamber of the socket.

Claims (14)

In an inner plug for dispensing a liquid or pasty substance (P) for attachment to a tank (R) that can be pressurized,
A socket (1) having a connection tip (11) to the tank (R) and an ejection hole (10);
A movable occluder (2) stored inside the socket (1) to form a flow path for the substance (P);
Elastic return means (3) of the movable occluder (2),
Furthermore, a dispensing inner plug having the following characteristics.
The movable occluder (2) has a rod (21) and an inflow valve composed of an elastically deformable peripheral lip (23).
The outer end of the rod (21) constitutes a plug (20) that forms a discharge valve together with the ejection hole (10), and the inner end of the rod (21) is an elastic return means (3) of the movable occluder (2) ) To support the transverse wall (22).
The inflow valve is arranged in the flow path for the substance (P) and hermetically divides the internal space of the socket (1) into an upstream chamber and a downstream chamber.
The lip (23) is connected to the rod (21) and the free end of the lip is in close contact with the inner wall of the socket (1) in the closed position of the valve;   2. Inner plug according to claim 1, wherein the lip (23) forms a coaxial crown connected to the rod (21), the free end of the lip being on the inner wall of the socket (1) in the closed position of the valve. Dispensing inner stopper characterized by being closely attached.   3. Dispensing inner plug according to claim 2, characterized in that the transverse wall (22) is realized by the crown and only one part.   The internal stopper according to any one of claims 1 to 3, wherein the upstream end of the movable switch (2) is connected to the rod (21). In an inner plug for dispensing a liquid or pasty substance (P) for attachment to a tank (R) that can be pressurized,
A socket (1) having a connection tip (11) to the tank (R) and an ejection hole (10);
Inside the socket (1) has a movable occluder (2) stored so as to form a flow path for the substance (P),
Furthermore, a dispensing inner plug having the following characteristics.
The movable occluder (2) includes a rod (21).
The outer end of the rod (21) of the movable occluder (2) carries a plug (20) that forms a discharge valve together with the ejection hole (10).
-The inner end of the rod (21) of the movable occluder (2) is provided with a transverse wall (22).
The movable occluder (2) is provided with an inflow valve consisting of an elastically deformable peripheral lip (23).
The inflow valve of the movable occluder (2) is arranged in the flow path for the substance (P), and divides the internal space of the socket (1) in an airtight manner into an upstream chamber and a downstream chamber.
The transverse wall (22) is elastically deformable and is held by the connection end (11) of the socket (1), thereby forming the elastic return means of the occluder (2).
-The transverse wall (22) is perforated so as to arrange the flow path for the passage of the substance (P).   2. The dispensing plug according to claim 1, wherein the rod (21) forms a peripheral shoulder (22a) with a transverse wall (22).   The inner plug according to claim 6, wherein the elastic return means (3) has a rear end contacting the shoulder (22a) and a front end contacting the inner wall of the socket (1), and the rod (21) of the occluder (2). A distribution inner plug characterized by being a string spring that surrounds).   8. Dispensing inner plug according to claim 7, characterized in that the front end of the spring (3) abuts on a longitudinal rib (12) extending along the inner wall of the socket (1).   8. An inner groove according to claim 7, wherein the front end of the spring (3) is arranged on the inner wall of the socket (1), the inner edge of which is limited by the guide collar (14) of the rod (21). 13) A dispensing inner cap that contacts the bottom of 13).   The inner plug according to any one of claims 1 to 9, wherein the plug (20) has a main body (20a) closely contacting the inner edge (10a) of the ejection hole (10) when the side surface is in a closed position. And a head (20b) projecting out of the socket (1).   11. An inner stopper according to claim 10, wherein the ejection hole (10) has a truncated cone shape corresponding to the shape of the main body (20a) of the stopper (20).   12. The inner plug according to claim 10 or 11, wherein the socket (1) has a warhead shape, and the head (20b) of the plug (20) has a curvature that ensures continuity of the warhead-shaped appearance. A dispensing plug characterized by having a curved shape determined as follows.   13. The inner plug according to any one of claims 1 to 12, further comprising a top for abutting the socket (1) for covering the socket (1) with the inner wall to ensure the tightness of the closure. Dispensing plug, characterized in that it has a removable cap (4). 14. The inner plug according to any one of claims 1 to 13, wherein the transverse wall (22) is fitted by a claw (25) fitted in a sleeve (5) protruding into the tank. A dispensing inner plug that extends toward the tank (R).

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